Car Key Fob Repairs
Key fobs today do much more than unlock and start vehicles. However, the added complexity could add up to high repair bills if one of them breaks.
The good news is that most fobs are equipped with flat-watch-style batteries that are simple to replace at home. It is possible that a simple reset will bring your fob back to life.
Battery Replacement

The most frequent reason the key fob ceases to function is because of a dead battery. It's a simple repair, and is worth a try before you decide to spend money on a new key fob. Simply drive your car to an auto parts store or a hardware retailer that carries button cell batteries and purchase an alternative. You can also check your owner's manual (or in the case that you don't have one, YouTube is full of videos from people explaining how to do it) for specific instructions on opening and replacing the battery on the particular type of fob.
The majority of fobs have two halves that snap together- you'll need to gently pry the sides apart to get to the battery. You'll typically need a small screwdriver or a different tool equipped with a thin, flat blade. It's a good idea to look for a notch on the bottom of the fob that you can place your tool between. You may also want to be on the lookout for small pieces that could be loosened while working.
When you have your new battery, insert it in the same way that you removed the old one. Make sure the positive (+) side is facing up towards the buttons, and that the negative (-) side of the battery is aligned correctly with the markings inside the battery compartment of your fob.
You can push a button to test the fob. If it doesn't, you might have an issue with your vehicle that requires a professional to fix or replace.
Certain key fobs require special tools to open and close, and the connections inside may be delicate and easily corroded. In these instances you should consult a specialist in your car or dealer may be the best option. If you're looking to replace batteries, you should be gentle and follow the instructions that are specific to the owner's manual. You might be able locate a comparable battery at a discounter or big-box retailer, but you'll need to refer to your owner's manual to make sure that it's the right one for your vehicle.
Replacing the Internal Key
To prevent theft, most key fobs have an electronic key inside. When the fob battery dies, it leaves behind a blank internal key which can open doors and trunks (and in some cases, even start certain cars). A majority of people don't realize that they can avoid a trip to a dealership by replacing the fob batteries. The flat watch-style battery is used in the majority of modern fobs. These batteries are easily found at hardware and auto parts stores. Choosing the right type of battery is important however. The wrong type can damage the circuitry, causing the fob to fail much earlier.
If you try replacing the battery, and the problem persists, it could be a sign something else is happening in your vehicle. If you have an owner's manual, check to see if you can use a reset procedure to restore the fob's original programming. If this isn't working, you'll need to visit a dealership or an independent shop that specializes in security systems for vehicles and key fob programming.
Fobs can also malfunction due to faulty transmitter receivers. These are usually built into the dashboard or near the steering wheel, and they transmit signals that allow you to unlock and start your car using the fob. If you notice that you're required to move closer and closer to your vehicle in order to make it work, there's a good chance that the transmitter isn't working.
A professional may need to open the case of the fob to replace the transmitter. A simple screwdriver will usually do the trick, but certain fobs require a specific tool or special equipment which can only be found at a dealer. It is a good idea to have a qualified mechanic handle this job to ensure you don't damage the fob or injure yourself.
Reprogramming the Key
Most of the time, a key fob that isn't working just requires a new battery. g28carkeys.co.uk are easily found in home improvement and pharmacy stores and are inexpensive. This is a great method to start before you purchase an entirely new key fob.
Alternately, you might be able to program the fob on your own by following a few basic steps. The procedure varies for different vehicle manufacturers, so it is important to consult your owner's manual and study the specifics of the model you own. One key fob could require that the ignition be on when changing the program. Another may require the key to be inserted and removed repeatedly.
The general procedure is very simple. First, ensure that the new battery is securely in place. Close all doors except the driver's door. This will ensure that the new key fob is communicating with the vehicle correctly. Put the old key in the ignition, turn it ON, but do not start the engine. Press the lock button while aiming the fob towards the receiver of the transmission. It is usually located on the front, above the mirror. The key will notify the vehicle within a short period of time that it's being programmed. This can be done by turning off the door locks, or emitting an audible chime. This can be a tricky procedure, so pay attention to the timing and avoid pressing too hard the button.
If the key fob won't function after reprogramming, you can try replacing the batteries. If the issue persists, a visit to your car dealer or a locksmith is a good idea. A professional will have all the tools and equipment required to reprogram your car's fob, or even create a brand new one if necessary.
Genesky says he's able to program newer fobs for $200-$250, depending on the car. However, he's had the need to turn down customers who have European models because they don't have the costly equipment required. A majority of the aftermarket fobs are programmed, but you should always consult your local dealer to find out the cost.
How to get a new fob
If your key fob is simply damaged beyond repair, you could require a new one. Depending on your vehicle's model and make, an auto locksmith or dealership may be able to help. The dealership is likely to be the most expensive option for a replacement fob but it will also have the tools and software necessary to program your car properly. If you're looking for a cheaper solution, many independent locksmiths can offer you a brand-new car key fob at a lower cost.
It is a good thing to attempt to reset your current device before you make the decision to purchase a new one. Your owner's manual should outline the correct procedure for reset which is typically a series of button pushes which restores the original programming.
It is also a good idea to review the owner's manual and warranty information prior to deciding which place to go for a key fob replacement. If your car is under warranty, or you have a car insurance policy or auto club membership with bumper-to-bumper coverage, you may be eligible to receive a reimbursement for the cost of an entirely new fob.
Finding the best where to purchase the fob you need can be difficult. If you own a new car and would like the security with knowing that your keys fobs are in working order, you may be better off visiting the dealership to get this service. If you're looking for a more affordable alternative, it's possible to find a locksmith that will offer the same service for less cost.
A locksmith professional is a great choice If you're not confident doing this kind of work. They are equipped and trained to change or reprogram key fobs for cars of all types, and can do so quickly. A locksmith can also visit your office or home which is convenient for a lot of people. They can also cut and program keys on site if you've lost them. This is great for those who do not like to leave their car unattended.